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Early treatment of vulvar synechiae in childhood - prevention of late complications.
Ceska Gynekol
November 2023
Synechiae of the vulva occurs especially in girls in the so-called resting hormonal period with a minimal serum concentration of estrogens. If the external genitalia of the girl are not treated properly, the mucous membrane of the vaginal entrance is not regularly checked and mechanically removed, then the smegma of the opposite mucous membranes of the vulva can stick together. The place of the adhesion of epithelium in the vaginal introitus can be covered by a new epithelium and can create a firm adhesion, synechiae of the vulva, which is usually asymptomatic and is discovered incidentally during pediatric examination.
View Article and Find Full Text PDFNanocapsule-Based Reactive Nano-Fragrances with Slow-Release and Antibacterial Performances for Applications of Commodities.
J Biomed Nanotechnol
April 2022
State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, P. R. China.
Fragrances are widely used in everyday life. However, too fast volatilization rates and poor adhesion on substrates limit their applications. In this study, reactive nano-fragrance based on cyanuric chloride (CYC)-modified chitosan (CSCYC) were prepared by a solvent evaporation method.
View Article and Find Full Text PDFA Phase Inversion-Based Microfluidic Fabrication of Helical Microfibers towards Versatile Artificial Abdominal Skin.
Angew Chem Int Ed Engl
November 2021
State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, vJiangsu Key Laboratory of Fine Chemicals and Functional Polymer Materials, Nanjing Tech University, Nanjing, 210009, P. R. China.
Microfluidic spinning technology (MST), incorporating microfluidics with chemical reactions, has gained considerable interest for constructing anisotropic advanced microfibers, especially helical microfibers. However, these efforts suffer from the limited material choices, restricting their applications. Here, a new phase inversion-based microfluidic spinning (PIMS) method is proposed for producing helical microfibers.
View Article and Find Full Text PDFDevelopment of microcapsules using chitosan and alginate via W/O emulsion for the protection of hydrophilic compounds by comparing with hydrogel beads.
Int J Biol Macromol
April 2021
Department of Food Science, Cornell University, NY 14853, United States.
It is a critical challenge to protect hydrophilic compounds in food or pharmaceutical applications due to their strong tendency to leak out of the capsules into the external aqueous phase. In this work, we developed an encapsulation system that can protect hydrophilic ingredients using polyelectrolyte complexes prepared with chitosan and alginate via water-in-oil (W/O) emulsion. Unlike the traditional preparation of hydrogel beads, in which one material was added dropwise to another that had an opposite charge, we prepared microcapsules by electrostatic interaction between the positively charged -NH groups of chitosan and the negatively charged -COO groups of alginate by W/O emulsion via ultrasonication, which prevented the formation of large complexes.
View Article and Find Full Text PDFA Sulfur Copolymers (SDIB)/Polybenzoxazines (PBz) Polymer Blend for Electrospinning of Nanofibers.
Nanomaterials (Basel)
October 2019
Department of Chemical Engineering, De La Salle University, 2401 Taft Avenue, Manila 1004, Philippines.
This study demonstrated the processability of sulfur copolymers (SDIB) into polymer blend with polybenzoxazines (PBz) and their compatibility with the electrospinning process. Synthesis of SDIB was conducted via inverse vulcanization using elemental sulfur (S). Polymer blends produced by simply mixing with varying concentration of SDIB (5 and 10 wt%) and fixed concentration of PBz (10 wt%) exhibited homogeneity and a single-phase structure capable of forming nanofibers.
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